Isotope Labeled Buffers and Reagents: High-Purity Tools for Advanced Research

From NMR spectroscopy to mass spectrometry and biochemical assays, the accuracy of your results depends on the quality of your buffers and reagents. Isotope‑labeled versions provide the internal standards needed to correct for matrix effects, quantify metabolites, and elucidate reaction mechanisms.

Alfa Chemistry offers an extensive portfolio of over 500 high‑purity isotope‑labeled buffers, salts, acids, bases, detergents, and solvents. Our products are synthesized with >98% isotopic enrichment and are available in a variety of deuteration patterns (D, 13C, 15N) and packaging formats to suit your exact workflow.

Overview of Isotope‑labeled Buffers and Reagents

Why Isotope‑labeled Buffers?

In analytical techniques such as NMR, LC‑MS, and IR, isotope‑labeled reagents serve as ideal internal standards and background‑free probes. They allow:

Accurate quantification – Correct for sample loss and ionization suppression.
Background reduction – Deuterated solvents eliminate 1H signals in NMR.
Mechanistic studies – Track hydrogen/deuterium exchange or metabolic pathways.

Product Features and Benefits

Every product from Alfa Chemistry is manufactured under rigorous quality control:

High isotopic enrichment – >98% atom D, 13C, or 15N for minimal interference.
Certified purity – HPLC/GC trace and NMR spectra included with each lot.
Flexible packaging – Ampoules, septum vials, and bulk bottles with inert atmosphere.
Traceability – Comprehensive Certificate of Analysis (CoA) provided.

Product Categories of Isotope‑labeled Buffers and Reagents

Our isotope‑labeled buffers and reagents are organized into five major categories. Click on a category to view representative products and detailed specifications.

1. Deuterated NMR Solvents

2. Deuterated Acids & Bases

3. Deuterated Salts & Buffers

4. Deuterated Detergents & Surfactants

5. 13C / 15N Labeled Reagents

1. Deuterated NMR Solvents

Product count: 80+ solvents
Applications: High‑resolution NMR, relaxation studies, FT‑IR calibration.
Isotope labeling: Deuterium (D) with 99.5‑99.96% atom D.

Product examples:

Catalog	Name	Price
ACM1076433-3	Benzene‑d6 (99.6 atom%D)	Inquiry
ACM1849292-3	Methanol‑D3 (>99.5 Atom % D, 1ml ampoule)	Inquiry
ACM1186523-2	Acetic acid‑D4 (99.5 atom% D, 10x0.75ml)	Inquiry
ACM1693749-2	Tetrahydrofuran‑D8 (>99.5 Atom % D, 10x0.75ml)	Inquiry
ACM1455136-3	Methanol‑OD (>99.5 Atom % D, 25ml)	Inquiry
ACM1735177-3	Cyclohexane‑D12 (>99.5 Atom % D, 5ml)	Inquiry

2. Deuterated Acids & Bases

Product count: 70+ items
Applications: pH adjustment in D2O, titrations, deuterated buffer preparation.
Isotope labeling: Deuterium, also available with 13C.

Product examples:

Catalog	Name	Price
ACM14014063-3	Sodium deuteroxide (1.0M in D2O, >99.8 Atom% D)	Inquiry
ACM14335332-3	Phosphoric acid‑D3 (99.0 Atom% D, 10ml)	Inquiry
ACM13536599-2	Deuterium Bromide (46% in D2O, >99.0 D)	Inquiry
ACM13761790-2	Potassium dideuterium phosphate (D2, 98%)	Inquiry
ACM12015144-2	Ammonium‑D4 chloride (>99.0 Atom% D, 5g)	Inquiry

3. Deuterated Salts & Buffers

Product count: 100+ salts and buffer components
Applications: Biological NMR, isotope dilution assays, enzyme kinetics.

Product examples:

Catalog	Name	Price
ACM194787058-2	Ammonium acetate‑d7 (5g bottle)	Inquiry
ACM20515382-1	Ammonium acetate‑D3 (5g bottle)	Inquiry
ACM110863246-1	Sodium n‑dodecyl‑d25 sulfate (SDS‑d25)	Inquiry
ACM203806068-1	Betaine (D11)	Inquiry
ACM13814012-1	Ammonium‑D8 sulphate (>98 Atom% D, 5g)	Inquiry

4. Deuterated Detergents & Surfactants

Product count: 30+ detergents
Applications: Membrane protein studies, micelle characterization, SANS.

Product examples:

Catalog	Name	Price
ACM130890787-1	N‑Dodecylphosphocholine‑d38	Inquiry
ACM203633210	(±)-1,4‑Dithiothreitol‑d10 (DTT‑d10)	Inquiry
ACM203645378-1	2‑Mercaptoethanol‑d6	Inquiry

5. 13C / 15N Labeled Reagents

Product count: 60+ compounds
Applications: Metabolic flux analysis, protein NMR, tracer studies.

Product examples:

Catalog	Name	Price
ACM100849374-1	Aniline (13C6, 99%)	Inquiry
ACM2067803-3	Urea (15N2, 98%+)	Inquiry
ACM17830012	Acetic Anhydride (2,2'‑13C2, 99%)	Inquiry
ACM1632980	Acetaldehyde (1,2‑13C2, 99%)	Inquiry
ACM181517011	Guanidine:HBr (13C, 99%; 15N3, 98%)	Inquiry

How to Choose the Right Isotope‑labeled Reagent

Step 1: Identify Your Application

NMR spectroscopy → Deuterated solvents with 99.8% D or higher.
Mass spectrometry internal standards → 13C or 15N labeled analogues.
Buffered systems (pH studies) → Deuterated acids, bases and salts.

Step 2: Select Isotope Labeling

Deuterium (2H) – Best for NMR solvents, exchangeable protons, and general internal standards.
Carbon‑13 – For metabolic tracing and MS where deuterium exchange is problematic.
Nitrogen‑15 – Ideal for protein NMR and studying nitrogen metabolism.

Step 3: Concentration & Formulation

Neat compounds – For custom solution preparation.
Pre‑made solutions – In D2O, methanol‑d4, or other solvents.
Pack sizes – 0.5ml ampoules, 10ml septum vials, or bulk containers.

Step 4: Verify Solvent Compatibility

Technique → Recommended solvent systems

NMR: D2O, CDCl3, DMSO‑d6, toluene‑d8, etc.
LC‑MS: Methanol‑d4, acetonitrile‑d3, water‑d2.
Biochemical assays: deuterated buffers (e.g., Tris‑d11, phosphate‑d2).

Case Studies: Leveraging Isotope‑labeled Buffers in Research

Case Study 1: Protein NMR in Deuterated Tris Buffer

Challenge: A structural biology group needed to record high‑resolution 2D NMR spectra of a membrane protein. Protonated Tris buffer obscured the amide region.

Solution: By switching to our Tris‑d11 (Catalog ACM202656131-1) dissolved in D2O, all buffer signals were eliminated.

Result: The 1H‑15N HSQC spectrum revealed 20 additional cross‑peaks, enabling complete backbone assignment.

Case Study 2: Deuterated SDS for Small‑Angle Neutron Scattering

Challenge: Researchers studying lipid‑detergent complexes needed contrast variation in SANS. Protonated SDS gave insufficient contrast.

Solution: Using our sodium n‑dodecyl‑d25 sulfate (SDS‑d25, ACM110863246-1) they prepared matched‑contrast samples.

Result: The scattering data allowed unambiguous modeling of the detergent belt around a membrane protein, published in a high‑impact journal.

Case Study 3: Quantification of Neurotransmitters with 13C‑labeled Internal Standards

Challenge: Accurate LC‑MS/MS quantification of GABA and glutamate in microdialysis samples was hampered by ion suppression.

Solution: We provided custom‑synthesized 13C‑labeled GABA and glutamate. These were spiked into every sample before analysis.

Result: The isotope dilution method yielded<5% RSD and linearity over three orders of magnitude, meeting FDA guidance.

Customer Voices

"The deuterated Tris and HEPES buffers from Alfa Chemistry have been a game‑changer for our protein NMR facility. The isotopic purity is consistently >99%, and the customer support is outstanding."

— Dr. Emily Carter

"We used 13C‑labeled urea and ammonium salts for metabolic flux analysis. The enrichment was exactly as specified, and the delivery was prompt. Highly recommended."

— Prof. Michael Lee

"SDS‑d25 allowed us to perform contrast‑matched SANS experiments that were previously impossible. The product quality is excellent and the documentation is thorough."

— Dr. Sarah Jenkins

FAQs About Isotope‑labeled Buffers and Reagents

Q1: What is the shelf life of deuterated buffers?

A: Most deuterated solids stored at –20°C in sealed containers are stable for >5 years. Solutions in D2O should be used within 1‑2 years; always check the CoA.

Q2: Can deuterated reagents exchange with protons in water?

A: Deuterium on heteroatoms (O‑D, N‑D) can exchange rapidly. For non‑exchangeable C‑D bonds they are stable. For aqueous work, 13C or 15N labels are often preferred.

Q3: Do you provide custom concentration or packaging?

A: Yes, we offer custom gravimetric mixtures, specific molarities, and specialized ampouling (septum vials, crimp‑top). Contact our team for a quote.

Q4: What is the typical isotopic enrichment for your products?

A: For deuterium we offer 98‑99.96 atom% D; for 13C and 15N, 98‑99 atom% enrichment is standard. Higher enrichments available on request.

Q5: How should I store deuterated hydrochloric acid?

A: DCl (and other deuterated acids) should be stored at 2‑8°C in tightly sealed vials, protected from light. The CoA provides detailed storage conditions.

Q6: Do your products meet pharmacopoeia standards?

A: Many of our reagents are manufactured under ISO 9001 and can be tested according to USP/EP requirements upon request. Please inquire for details.

Isotope Labeled Buffers and Reagents: High-Purity Tools for Advanced Research

Overview of Isotope‑labeled Buffers and Reagents

Why Isotope‑labeled Buffers?

Product Features and Benefits

Product Categories of Isotope‑labeled Buffers and Reagents

1. Deuterated NMR Solvents

2. Deuterated Acids & Bases

3. Deuterated Salts & Buffers

4. Deuterated Detergents & Surfactants

5. 13C / 15N Labeled Reagents

1. Deuterated NMR Solvents

Product examples:

2. Deuterated Acids & Bases

Product examples:

3. Deuterated Salts & Buffers

Product examples:

4. Deuterated Detergents & Surfactants

Product examples:

5. 13C / 15N Labeled Reagents

Product examples:

How to Choose the Right Isotope‑labeled Reagent

Step 1: Identify Your Application

Step 2: Select Isotope Labeling

Step 3: Concentration & Formulation

Step 4: Verify Solvent Compatibility

Isotope Labeling Technologies

Deuterium (2H) Labeling

Carbon‑13 (13C) Labeling

Nitrogen‑15 (15N) Labeling

Multi‑isotope (13C/2H/15N)

Custom Synthesis

Case Studies: Leveraging Isotope‑labeled Buffers in Research

Case Study 1: Protein NMR in Deuterated Tris Buffer

Case Study 2: Deuterated SDS for Small‑Angle Neutron Scattering

Case Study 3: Quantification of Neurotransmitters with 13C‑labeled Internal Standards

Customer Voices

FAQs About Isotope‑labeled Buffers and Reagents

Related Resources

Guide to Deuterated Buffers for Biological NMR

Stable Isotope Internal Standards: Selection and Use

Application Note: Isotope Dilution in Metabolomics

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